CVE-2026-93961 Dromara UJCMS UserController UserController.java usernameExist improper authorization
Remote attackers can bypass authorization checks in the usernameExist function to access user data without proper permissions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93961?
CVE-2026-93961 is a medium-severity missing authorization vulnerability in Dromara UJCMS, published on 20 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security flaw has been discovered in Dromara UJCMS up to 12.3.1. The affected element is the function usernameExist of the file ujcms-cms/src/main/java/com/ujcms/cms/core/web/api/UserController.java of the component UserController. Performing a manipulation of the argument Username results in improper authorization. It is possible to initiate the attack remotely. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-93961?
How do I fix CVE-2026-93961?
No fix has been published for CVE-2026-93961 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-93961 being exploited?
There is no known exploitation of CVE-2026-93961 in the wild and no public exploit code.
Sources
Also known as GHSA-7f9q-8hrr-q8pw.